Anatomy and physiology. Sponges have no head or tail. They are basal metazoans characterized by a lack of true tissue (with a few exceptions), sensu stricto of the muscle or nervous system, gastrointestinal cavities, and gonads.
Does the sponge have a skull?
Invertebrates, or invertebrates, are animals that do not contain bone structures such as skulls and vertebrae. The simplest of all invertebrates is the sponge, which contains only the sponge phylum ([Figure 1]).
Do sponges have a head?
Sponges, usually found in the ocean, are some of the simplest animals in the world. They have no head, no eyes, no tail, no mouth, and they live with most of their lives rooted in one place. .. The sponge feeds by pumping water from the pores and filtering small particles of food.
Is there a man on the sponge?
Many sponges are hermaphroditic and other sponges do not change gender throughout their lives. In addition, some people alternate between men and women. .. Unlike all other animals, the sponge has no organized gonads. Instead, sperm are produced and float in the internal organs of the sponge (called the mesohyl).
Can you think of a sponge?
Sponges do not have the nervous system or organs like most animals. This means they do not have the ability to feel the eyes, ears, or anything physically. .. Since the sponge has no nerves or brain, it does not have the ability to cognitively control movement.
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